Taper cutting and threading attachment for bolt-cutting machines.



No. 883.561. PATENTED MAR. 81,.1908. H. NBVILLE.-

TAPER- CUTTING AND THREADING ATTACHMENT PORBOLT CUTTING 'MAOHINES.

APPLICATION FILED BEPT.12,'1907. I

2 SHEETS-SHEET 1.

anew-un o nu: Null]! Psrins cm. wAsummou. n. c

No. 883,561. PATENTED MAR. 31, 1908.

H. NEVILLE.

TAPER CUTTING AND THREADING ATTACHMENT FOR BOLT CUTTING v I MACHINES. 4I

APPLICATION FILED SEPT. 12, 1907.

2 SHEETS-SHEET 2.

nu: Nwzms PETERS cm, wAsumcran, p. c.

HARRY NEVILLE, OF LOS ANGELES, CALIFORNIA.

TAPER CUTTING AND THBEADING ATTACHMENT FOR BOLT-CUTTING MACHINES.

Specification of Letters Patent.

Patented March 81, 1908.

Application filed. September 12, 1907. 7 Serial No. 392,549.

To all whom it may concern:

Be it known that I, HARRY NEVILLE, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented certain new and useful Improvements in TaperCutting and Threading Attachments for Bolt-Cutting Machines; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention has relation to new and useful improvements in tapercutting and threading attachments for bolt cutting machines, and has forits object the production of a simple and inexpensive device of thischaracter, adapted to be readily and easily applied in operativeposition to a bolt cutting machine, through the use of which taperthreads may be cut on the bolts in an expeditious manner, and with aminimum of labor on the part of the operator.

With the foregoing and other objects in view, that will readily appearas the nature of the invention is better understood, the inventionconsists in the novel features, of construction, combination andarrangement of parts, illustrated in the drawings, and particularlypointed out in the appended claims.

In the accompanying drawings, Figure 1 is a view of the taper cuttingand threading attachment constructed in accordance with the inventionapplied in operative position to a bolt cutting machine, only so much ofthe machine being shown as is necessary to illustrate the invention,Fig. 2, is a plan view of the invention detached from position withparts broken away to more advantageously illustrate the invention, Fig.3 is a side elevation of Fig. 2 looking in the direction indicated bythe arrows and, Fig. 4 is a front end view of the invention detachedfrom position.

Referring to the accompanying drawings, which are for illustrativepurposes only, and therefore not drawn to any particular scale, 1indicates a frame adapted to be attached to the carriage of the boltcutting machine by screws 2 or other equivalent means, and 3 a rockershaft projecting laterally and outwardly from the frame. This shaftcomprises a central or intermediate portion 4 having a reduced threadedouter end portion or stem 5. A rocker 6 is pivotally con nected at itsinner or rear end to the central part of the rocker shaft and is held inremovable position thereto by a washer, and nut 7 and 8, respectively,arranged on the stem of the rocker shaft.

The front or free end of the rocker is providedwith a longitudinallydisposed socket 9 adapted to receive the correspondingly shaped end of aconnecting rod 10, said end being removably connected with the rockerbya pin 1 1 passing transversely through the socket end thereof. Theopposite end of the connecting rod works through two longitudinallyspaced tubular guide members 11 having each an exteriorly threaded stemto receive the interiorly threaded ends of a con necting sleeve or othertubular member 12, for establishing a substantial connection between theguide members and coacting therewith in providing a guide and supportfor the free end of the connecting rod. A frame 12, comprising alaterally disposed body portion 13, having a longitudinal socket 14 inone end to receive the die controlling shaft of the bolt cuttingmachine, and a central, outwardly extending arm 15, extending atright-angles from said body portion, is provided. To provide anadjustable connection for the outer guide member, that the invention maybe adjusted for different tapers, provide the arm of said frame with alongitudinal slot 16 and outer end of the front guide member withaforwardly extending flat arm or extension 17 adapted to bear against theouter face of the arm of said frame. A bolt 18 having its headcountersunk in the outer face of said arm or extension 17, extendsthrough said slot 16 and is provided at its inner end with a reducedthreaded portion or stem 18 to receive a Washer and nut 19 and 20,respectively.

By the above defined construction, it will be readily perceived that thefront guide member may be easily and readily adjusted, with relation tothe longitudinal axis of the arm and the device adjusted for differenttapers. The outer edge of said arm 15 is provided with a scale orgraduation 21 to en able this adjustment to be accurately made. A collar21 is slidably mounted on the rear end of the connecting rod and isprovided with a set screw 22, whereby it may be held in an adjustedposition on the rod.

Clamping means comprising an upright post or member 23 having a reducedthreaded portion or stem 24 at its lower end adapted to work through therearmost guide member die controlling shaft of the machine.

l1 and engage the connecting rod, and an operating handle arranged atthe u per end of said post or member is provided so that the connectingrod may be held against movement relatively to the guide members and asecure connection established between the arm of the frame 12 and thecarriages of the bolt cutting machine, the purpose of which will beshown.

In practice, a piece of work2- placed in proper position in the carriageof the bolt cutting machine, and sent forwardly by the operator. Thecollar 21 is so arranged on the connecting rod as to abut or engage theadjacent guide member, just as the work is received by dies of the boltcutting machine. The collar is then made fast with the connecting rod bythe set screw 22. The operating handle 25, of the clamping means is thenturned to effect a secure engagement between the reduced threadedportion or stem 24 of the upright post or member 23, and connecting rod.This done, relative movement of the connecting rod with the guidingmeans is prevented and a solid or substantial connection effectedbetween the carriage of the bolt cutting machine and the The carriage ofthe machine is then moved inwardly during which operation the dies arecutting .the thread, and the die controlling shaft turning and openingthe dies. When sufficient thread has been cut on the piece of work, theoperator turns the handle 24 to release the threaded stem 24 of theupright post with the connecting rod, when the dies y open and thecarriage travels to its initial position, and carries with it theconnecting rod.

Having thus described my invention, what I claim, is:

1. In a bolt cutting machine, a taper threading attachment comprising aconnecting rod arranged for pivotal connection with the carriage of saidmachine, guiding means for the free end of the connecting rod, a framecom rising a horizontal member adapted to be fixed to the diecontrolling shaft of the machine, and an arm extending at right anglesto said member, means for maintaining the connecting rod in fixedposition,

relative to the guiding means, means for con necting the arm of theframe with the adjacent end of the guiding means, and means adjustablymounted on the end of the connecting rod for engaging the end of theguiding means.

2. In a bolt cutting machine, a taper threading attachment comprising aconnecting rod arranged for pivotal connection with the carriage of themachine, longitudinally spaced tubular guide members, a tubular memberarranged between said guide members, said tubular and guide membersreceiving the free end of the connecting rod, a frame comprising ahorizontal member having a socket in one end to receive the diecontrolling shaft of the machine, and an arm extending at right-anglestherefrom, means for connecting the-front guide member with the arm ofthe frame, means for maintaining the connecting rod against relativemovement with the guide members and means mounted on the end of theconnecting rod for engaging the adjacent guide member.

3. In a bolt cutting machine, a taper cutting and threading attachmentcomprising a frame having a laterally disposed body with a socket in oneend to receive the die controlling shaft of the machine, and alongitudinally slotted arm extending at right-angles from said body, twolongitudinally spaced tubular guide members, a connecting sleevearranged between the members, means for connecting the front tubularmember with the arm of the frame, a longitudinally disposed connectingrod working through the guide members and connecting sleeve, means forpivotally connecting the rear end of said rod with the carriage of thebolt cutting machine, and means mounted on the pivoted end of theconnecting rod for engaging the adjacent guide member with means forholding the connecting rod against relative longitudinal movement.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

HARRY NEVILLE. Witnesses:

FRANK GARRETT, WALTER F. HAAS.

